Мещерский Задача 8.40 — различия между версиями

Материал из Department of Theoretical and Applied Mechanics
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(→‎Условие задачи)
Строка 170: Строка 170:
 
gui.add(controls,'Mass',0,50).onChange(rewrite);
 
gui.add(controls,'Mass',0,50).onChange(rewrite);
 
gui.add(controls,'Length',0,0.71).onChange(rewrite);
 
gui.add(controls,'Length',0,0.71).onChange(rewrite);
−
gui.add(controls,'result_Nx',0,300).listen();
+
gui.add(controls1,'result_Nx',0,300).listen();
−
gui.add(controls,'result_Ny',0,300).listen();
+
gui.add(controls1,'result_Ny',0,300).listen();
−
gui.add(controls,'result_T',0,300).listen();
+
gui.add(controls1,'result_T',0,300).listen();
 
//gui.add.onChange()(physics,'Height',0,1);
 
//gui.add.onChange()(physics,'Height',0,1);
 
 

Версия 21:53, 13 февраля 2017

Мещерский Задача 8.40

Визуализация 3D-задачи по статике на JavaScript

Исполнитель: Давыдова Алена

Группа 23604/1 Кафедра Теоретической механики

Условие задачи

DavA2.bmp

<syntaxhighlight lang="javascript" line start="1" enclose="div">

<!DOCTYPE html>

<html> 

 <script src = "http://tm.spbstu.ru/htmlets/DavydovaA/Kartina/three.js" >

</script> <script src = "http://tm.spbstu.ru/htmlets/DavydovaA/Kartina/stats.min.js" > </script> <script src = "http://tm.spbstu.ru/htmlets/DavydovaA/Kartina/OrbitControls.js" > </script> <script src = "http://tm.spbstu.ru/htmlets/DavydovaA/Kartina/dat.gui.js" > </script> <style> body { margin:0; overflow:hidden; } </style>

</head> <body>

<script type="text/javascript"> var renderer,scene,camera,stats,sphere,cube,controls,control,spotLight, torus, torusM; var allowHelper1,allowHelper2,allowHelper3,allowHelper4,allowHelper5,allowHelper6,allowHelper7; var step = 0; scene = new THREE.Scene(); camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000); renderer = new THREE.WebGLRenderer();

renderer.setClearColor(0xEEEEEE, 1.0); renderer.setSize(window.innerWidth, window.innerHeight); renderer.shadowMap.Enabled = true;

var M = 20; var g = 10; var L = 0.6; var H = 0.75; var tg = 0.75; var Lsh = 0.85; var N = 0; var Nx = 0; var Ny = 0; var T = 0; var delth = 0; var Picture; var Line2; var AH1; var AH2; var AH3; var AH4; var AH5; var AH6; var AH7;

function physics() { D=(Math.sqrt(Lsh*Lsh-L*L))/2; Dpr = 0.3*H; dh = Math.sqrt(D*D-Dpr*Dpr); sinAl = 2*D/Lsh; sinB = dh/D; cosB = Dpr/D; sinFi = 0.8*cosB+0.6*sinB; T = 0.3*M*g/(sinFi*sinAl); Nx = T*sinAl*cosB; Ny = M*g/2 +-T*sinAl*sinB; N=0.5*Math.sqrt(Nx*Nx+Ny*Ny) console.log (T,' ',Nx,' ',Ny); controls.result_Nx = Nx; controls.result_Ny = Ny; controls.result_T = T; delth=dh; }


function rewrite() { M = controls.Mass; L = controls.Length; H = 0.75; tg = 0.75; Lsh = 0.85; physics(); }

function init() {

var axes = new THREE.AxisHelper( 20 ); scene.add(axes); scene.add(camera);

//document.body.appendChild( renderer.domElement );

var polGeometry = new THREE.PlaneGeometry(50,15,1,1); var polMaterial = new THREE.MeshLambertMaterial({color:0xDAA520 }); //0xcccccc var pol = new THREE.Mesh(polGeometry,polMaterial); pol.rotation.x=-0.5*Math.PI; pol.position.x = 0; pol.position.y = 0; pol.position.z = 7.5; pol.receiveshadow = true; scene.add(pol);

//wall1 //var wall1Geometry = new THREE.PlaneGeometry(50,20,1,1) /*var wall1Material = new THREE.MeshBasicMaterial({color:0xFFFACD}) var wall1 = new THREE.Mesh(wall1Geometry,wall1Material); wall1.position.y =10; //scene.add(wall1);*/

//wall var wallG = new THREE.BoxGeometry(50,20,2); var wallM = new THREE.MeshLambertMaterial({color: 0xFFFACD}); wall = new THREE.Mesh(wallG,wallM); wall.castShadow = true; wall.position.z = 0; wall.position.y = 10; scene.add(wall);


var spotLight = new THREE.SpotLight( 0xffffff ); spotLight.position.set( 60, 60, 70 ); spotLight.castShadow = true; scene.add( spotLight );

camera.position.x = -30; camera.position.y = 40; camera.position.z = 30; camera.lookAt(scene.position); document.getElementById("WebGL").appendChild(renderer.domElement);

control = new THREE.OrbitControls(camera,renderer.domElement);

controls = new function() { this.Mass = M; this.Length = L; this.Height = H; this.result_Nx = Nx; this.result_Ny = Ny; this.result_T= T; //this.Height = ambiColor; }


var gui = new dat.GUI(); gui.add(controls,'Mass',0,50).onChange(rewrite); gui.add(controls,'Length',0,0.71).onChange(rewrite); gui.add(controls1,'result_Nx',0,300).listen(); gui.add(controls1,'result_Ny',0,300).listen(); gui.add(controls1,'result_T',0,300).listen(); //gui.add.onChange()(physics,'Height',0,1);


stats = initStats(); renderScene(); }

window.onload = init(); window.addEventListener('resize',onResize,false);

function ClearScene() { scene.remove(Picture); scene.remove(Line2); scene.remove(AH1); scene.remove(AH2); scene.remove(AH3); scene.remove(AH4); scene.remove(AH5); scene.remove(AH6); scene.remove(AH7); }

function renderScene() { stats.update();

ClearScene();

physics();

var lineGeometry = new THREE.Geometry();//Производная фигура lineGeometry.vertices.push(new THREE.Vector3(-5*L,10,(1+3*H)));//Указываем вектор первой точки lineGeometry.vertices.push(new THREE.Vector3(0, 10*delth+10+4*H, 1));//Указываем вектор второй точки lineGeometry.vertices.push(new THREE.Vector3(5*L,10,(1+3*H))); var lineMaterial = new THREE.LineBasicMaterial({color:0xFFFFFF, linewidth:500}); var line = new THREE.Line(lineGeometry, lineMaterial);//Создаем линию из созданной геометрии scene.add(line); Line2=line;

var pictG = new THREE.BoxGeometry (L*10,H*10,0.5); var texture = THREE.TextureLoader('iskushenie-sviatogo-antoniya.jpg'); //texture.repeat.set( 1, 1 ); var pictM1 = new THREE.MeshLambertMaterial();//( {map: texture} ); //var pictM2 = new THREE.MeshLambertMaterial({color:0xDAA520 }); //var pictMaterials =[]; var pict = new THREE.Mesh(pictG,pictM1); pict.position.x = 0; pict.position.y = 10; pict.position.z = 3.5; pict.rotation.x = Math.atan(0.75); scene.add(pict); Picture = pict;

var dir = new THREE.Vector3( 0, 0, 1 ); var origin = new THREE.Vector3( L*5, 10-H*4, 1.1 ); arrowHelper1 = new THREE.ArrowHelper(dir, origin, Nx/30, 0xFF1493); scene.add( arrowHelper1 ); AH1=arrowHelper1


dir = new THREE.Vector3( 0, 1, 0 ); origin = new THREE.Vector3( L*5, 10-H*4, 1.1 ); arrowHelper2 = new THREE.ArrowHelper(dir, origin, Ny/30, 0xFF8010); scene.add( arrowHelper2 ); AH2=arrowHelper2;


dir = new THREE.Vector3(-5*L, 10*delth+4*H, 1-(1+3*H)).normalize(); origin = new THREE.Vector3(5*L,10,(1+3*H)); arrowHelper3 = new THREE.ArrowHelper(dir, origin, T/30, 0xFF1493, 0.40 , 0.40); scene.add( arrowHelper3 ); AH3=arrowHelper3;

dir = new THREE.Vector3(5*L, 10*delth+4*H, 1-(1+3*H)).normalize(); origin = new THREE.Vector3(-5*L,10,(1+3*H)); arrowHelper6 = new THREE.ArrowHelper(dir, origin, T/30, 0xFF1493, 0.40 , 0.40); scene.add( arrowHelper6 ); AH6=arrowHelper6; console.log(dir);

dir = new THREE.Vector3( 0, 0, 1 ); origin = new THREE.Vector3( -L*5, 10-H*4, 1.1 ); arrowHelper4 = new THREE.ArrowHelper(dir, origin, Nx/30, 0xFF1493); scene.add( arrowHelper4 ); AH4=arrowHelper4;


dir = new THREE.Vector3( 0, 1, 0 ); origin = new THREE.Vector3( -L*5, 10-H*4, 1.1 ); arrowHelper5 = new THREE.ArrowHelper(dir, origin, Ny/30, 0xFF8010); scene.add( arrowHelper5 ); AH5=arrowHelper5;


//step+=controls.bouncingSpeed; requestAnimationFrame(renderScene); renderer.render(scene,camera);

}

function onResize() //moving of camera { camera.aspect = window.innerWidth/window.innerHeight; camera.updateProjectionMatrix(); renderer.setSize(window.innerWidth,window.innerHeight); }

function render() { stats.update(); requestAnimationFrame( render ); renderer.render( scene, camera ); }

function initStats() //window in the left corner { stats = new Stats(); stats.setMode(0); stats.domElement.style.position = '0px'; stats.domElement.style.left = '0px'; stats.domElement.style.top = '0px'; document.getElementById("Stats-output").appendChild(stats.domElement); //renderer.shadowMap.Enabled = true; return stats; } render();

function onResize() //moving of camera { camera.aspect = window.innerWidth/window.innerHeight; camera.updateProjectionMatrix(); renderer.setSize(window.innerWidth,window.innerHeight); }


</script> </body>

</html>
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